CVE-2021-45891

CVE-2021-45891 is a high vulnerability published on April 5, 2022. An issue was discovered in Softwarebuero Zauner ARC 4.2.0.4., that allows attackers to escalate privileges within the application, since all permission checks are done client-side, not server-side.

CVE-2021-45891 was first published in the National Vulnerability Database on April 5, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

CVE-2021-45891 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 62.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

CVE-2021-45891 has a CVSS v3 base score of 8.8 (NVD).

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-45891, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.